Water Quality Certification and Isolated Wetland Permits

Anyone who wishes to discharge dredged or fill material into the waters of the U.S., regardless of whether on private or public property, must obtain a Section 404 permit from the U.S. Army Corps of Engineers (Corps) and a Section 401 Water Quality Certification (WQC) from the state.

Anyone who wishes to discharge dredged or fill material into isolated wetlands in Ohio must obtain an Isolated Wetland Permit from Ohio EPA.

The 401 Water Quality Certification and Isolated Wetland Permitting Section reviews applications for projects that propose the placement of fill or dredged material into waters of the State, including streams, lakes and wetlands. The section also reviews required mitigation of issued permits and performs wetland research.

To make a complaint and/or report illegal fill activities, please email the Complaint Form [Word] to EPA.401Webmail@epa.ohio.gov.



Ohio EPA has ended the comment period on its proposed modification to the Section 401 Water Quality Certification of the U.S. Army Corps of Engineers’ 2012 Nationwide General Permits.  In the modification, the Agency proposed an additional general condition that would require the submittal of a qualitative assessment of the physical and biological characteristics for each undesignated perennial and intermittent stream with more than 60 linear feet of projected impact, prior to application for a Nationwide General Permit.  


Currently, the Agency has not defined what the qualitative assessment submittal should include (i.e., primary headwater habitat evaluation form (HHEI) and/or potentially a new assessment tool).   


To further discuss stakeholder input specifically on the qualitative assessment submittal, Ohio EPA is holding a stakeholder forum on Monday, October 20, 2014 from 1:00 to 4:00 p.m. at the State Library of Ohio, 274 E. 1st Ave., Columbus, Ohio 43201. 


If you would like to participate in this forum, please contact Darla Peelle, Ohio EPA Public Involvement Coordinator at (614) 644-2160.

New 401 Water Quality Certification Application

Ohio EPA has developed a new 401 water quality certification application (WQC) form. Both the new and old forms will be accepted through July 2014. For more information, please see Application Materials under the Water Quality Certifications tab.

In this video, Agency expert Ric Queen explains wetland classifications, and how the Agency monitors impacts to Ohio wetlands through the permitting processes.